CN2679350Y - Wellhead of downhole motor drilling - Google Patents

Wellhead of downhole motor drilling Download PDF

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Publication number
CN2679350Y
CN2679350Y CN 200420030615 CN200420030615U CN2679350Y CN 2679350 Y CN2679350 Y CN 2679350Y CN 200420030615 CN200420030615 CN 200420030615 CN 200420030615 U CN200420030615 U CN 200420030615U CN 2679350 Y CN2679350 Y CN 2679350Y
Authority
CN
China
Prior art keywords
wellhead
downhole
drilling
well head
main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200420030615
Other languages
Chinese (zh)
Inventor
夏炎
张宏波
韩建龙
郭建国
陆其军
艾平
张绪杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaohe Petroleum Exploration Bureau
Original Assignee
Liaohe Petroleum Exploration Bureau
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liaohe Petroleum Exploration Bureau filed Critical Liaohe Petroleum Exploration Bureau
Priority to CN 200420030615 priority Critical patent/CN2679350Y/en
Application granted granted Critical
Publication of CN2679350Y publication Critical patent/CN2679350Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a wellhead of downhole motor drilling, belonging to the wellhead device type for oil well operation. When drilling, milling and packer are carried out or the bridging plug is trimmed in the fish head construction during the downhole operation in prior art, the phenomenon of reaction torque of the downhole motor drilling tools occurs, and the normal operation can not be carried out if the phenomenon is serious. The device is a wellhead device provided to overcome the defect. A sealing rubber core is arranged in the wellhead main body and the structures of hexagonal drilling rod and hexagonal chuck are adopted at the entrance of the wellhead, which overcomes the defect. When the wellhead is used, the drilling tool reaction torque force caused by the downhole power is confined at the wellhead, which makes the normal downhole operation realized successfully. Besides, the utility model is applicable to downhole minor repair operation because of compact structure, convenient operation and low cost in the operation.

Description

A kind of mud motor well head
Technical field:
The utility model relates to a kind of mud motor well head; Belong to oil well operation wellhead assembly class.
Background technology:
In the conventional well workover in oil field, to often overlap and mill packer, underground work such as milling bridging plug, finishing fish head, drilling out, need the construction of rotary drilling in the operation, both under the situation of not establishing well head, adopted down-hole screw rod power drilling tool to bore and milled, but can occur the reaction torque phenomenon that produces by mud motor like this, and usually made to bore and mill construction and can't carry out, therefore be forced to employ large-scale well head power set or transfer heavy repair task to sometimes, workover cost is significantly increased.
The utility model content:
The purpose of this utility model is in order to overcome above-mentioned shortcoming, and a kind of mud motor well head that provides.This well head can mill packer when light maintenance underground work, milling bridging plug finishing fish head, and the drilling out operation when waiting to need the construction of rotary drilling, can prevent that drilling tool reaction torque phenomenon from taking place, thereby the assurance job execution is carried out smoothly.
Be described with regard to its utility model implementation below:
This wellhead assembly by take over a business, main body, handle and flange weldering knot form.Describedly linking one six side's chuck with hex bolts and nut above taking over a business, in main body, take over a business in, fixing sealed core.
Described six side's chuck hub positions have its cross section shape to be the hexahedron through hole, and described packing unit is an excellent bullet that forms with the butyronitrile rubber material.
The utility model compared with prior art has distinguishing feature:
Because this instrument well head main body section is equipped with six side's chucks, and in six side's chucks, packing unit is housed, during construction, this instrument is connected on the position of well head four-way, can be by tubing string with in the mud motor lower going-into-well, and then turn on pump mills, the construction of abrasive drilling, in the instrument because six side's chucks and ground packing unit are housed, can fetter and overcome the influence of the reaction torque active force that rotation drilling tool in down-hole produces, guarantee that therefore workover treatment carries out smoothly.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
The utility model is provided by following examples.
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated:
Among the figure by: hexagonal kelly 1, six side's chucks 2, hex bolts and nut 3, take over a business 4, packing unit 5, main body 6, handle 7, flange 8 form.
Among the figure:
Hexagonal kelly 6 is well tool, is that a cross section body is hexagonal column, penetrates in the central aperture in six side's chucks 2, then G.I.H.
Main body 6 shapes are cylindric, a dome dish 4 is being fixed by hex bolts and nut 3 in its upper end, and flange 8 is being welded in the lower end, and this has bolt hole above flange, this bolt hole is corresponding with the hole above the well head four-way flange, and is by bolt that both are together fixed to one another.
Main body 6 outside centre positions are welded with handle 7, its objective is to be used in dismounting.The more convenient body of holding during the utility model.
In main body 6 inside and 2 times positions of six side's chucks glue core 5 sealing together is housed; During assembling, sealing sealing core should be close to the wall of hexagonal kelly and main body 6, so that the torsional forces that drilling rod is brought by power drilling tool when having enough big frictional force to overcome operation, thereby the assurance workover treatment normally moves.
The utility model working method is:
During use, this instrument is connected above the well head four-way, can be lowered to mud motor,, connect well head hexagonal kelly 1, can turn on pump carry out the down-hole and mill, grind, bore construction when mud motor during down to the precalculated position.
Because in when construction, well dynamic makes the drilling rod rotation and junk is handled, do the time spent when the bigger reaction torque that the drilling rod at well head position produces, this reaction force can be bound on the drilling rod.And sealed glue core offsets, thereby guaranteed job execution to carry out smoothly and can not cause that drilling rod is disconnected to be lost.
In the construction, drilling fluid, can enter into the well dynamic instrument by hexagonal kelly and drilling tool, under the fluid effect, can make well dynamic creep into rotation, then fluid is returned out by the down-hole, enter in the annular space of drilling tool and sleeve pipe, return out ground by well head four-way position at last, so far, finish the utility model proposes of task.

Claims (3)

1, a kind of mud motor well head, be by taking over a business (4), main body (6) handle (7) and flange (8) by being welded, it is characterized in that: describedly take over a business to connect one six side's chuck (2) with screw bolt and nut (3) above (4) and take over a business in (4), be fixed with packing unit (5) in described main body (6).
2, a kind of mud motor well head according to claim 1 is characterized in that: the centre bit of six side's chucks (2) is equipped with its cross section shape and is positive hexahedron through hole.
3, a kind of mud motor well head according to claim 1 is characterized in that: packing unit (5) is an excellent bullet that forms with the butyronitrile rubber material.
CN 200420030615 2004-03-01 2004-03-01 Wellhead of downhole motor drilling Expired - Fee Related CN2679350Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420030615 CN2679350Y (en) 2004-03-01 2004-03-01 Wellhead of downhole motor drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420030615 CN2679350Y (en) 2004-03-01 2004-03-01 Wellhead of downhole motor drilling

Publications (1)

Publication Number Publication Date
CN2679350Y true CN2679350Y (en) 2005-02-16

Family

ID=34583653

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420030615 Expired - Fee Related CN2679350Y (en) 2004-03-01 2004-03-01 Wellhead of downhole motor drilling

Country Status (1)

Country Link
CN (1) CN2679350Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101054893B (en) * 2007-05-29 2010-05-26 安东石油技术(集团)有限公司 Dissection type packer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101054893B (en) * 2007-05-29 2010-05-26 安东石油技术(集团)有限公司 Dissection type packer

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee